It's been more than 3-4 years since my 90 wing but it fit like a glove with no adjustment. I was very pleased with their products then and now. I recently installed their Jspec side skirts on my 94 and they needed a minor amount of hand sanding to make them perfect. I'm detail oriented but even so it wasn't anything more than I could tweak with a sanding block and 180 grit. I've also used their nose panels that fit perfect.